Drawing frame for treating vegetable, animal, or artificial fibers of varying lengths



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DRAWING il ny .m @d n vPatented Dec. 3, 1940 UNITED STATES TABLE,

DRAWING FRAME FOR TREAT'ING VEGE- OB, ARTIFICIAL FIBEBS F VARYINGLENGTHS Jan Weinberger, Brunn, Czechoslovakia, assignor of twenty-liveper cent to St. George Textile -Corporatiom New York, N. Y., acorporation of New York Application Maren 2, 193s, serial Nc. 193,588

s claims. (ci. 1s-141 This invention relates to certain new and usefulimprovements in drawing frames for treating vegetable, Aanimal orartiflcial'bers of varying 5 lengths and is a combinationof the generaltype disclosed in application for patent filed by Jan Weinberger onOctober A25, 1937, Serial No.

f 170,911, for improvements'inDrawing frames for vtreating vegetable,animal or artificial fibers of varying lengths, and embodiesimprovements in the art thereover.

The primary object of this invention is to utilize a cotton drawingframe that is designed for the handling of bers with relatively shortstaple by slightly modifying the construction of said cotton drawingframe-by thec removal therefrom of one or more rollers preceding thefront, or delivery draft rollers and substituting for such removedroller or rollers a cylinder formed of fibers of much greater lengthsthan normal cotton. staple may be treated by said frame.

A further object of the invention .is to utilize a cotton drawing framenormally comprising four pairs of rollers for the drawing of fibers ofvarying staple length, such as short and long fibers'- v found in wool,by substituting for the second top -roller preceding the front ordelivery draft roller a ring roller construction which provides betweenthe third roller and the front roller a comparatively long stretching orslide field with the long fibers controlled in their passage throughsaid slide field by the front rollers, while the passage of the shortfibers through the slide field is conf trolled and directed -toward thefront rollers by the ring roller.

A further object of the invention is to-utilize acotton'drawlng frame ofstandard construction for the treatment of mixed or long staple flbersby substituting a roller formed of freely mounted edge-abutting ringsfor the second roller preceding the front or delivery draft rollers ofthe cot- 'ton drawing frame, an even application of pressure beingexerted on the sliver by themovement of rings riding on the sliver, theperipheral speed 45 of rotation of which is controlled by the speed ofmovement of the sliver tlierebeneath, the several rings of the cylinderengaged with the sliver imparting an even pressure over the.entire-surface of the sliver engaged by said rings, the long 50 fibersmoving between thethird an'd front rollers independently of the ringroller, the latter acting to control and direct'the feeding of theshorter. bers to the front rollers.

A still furtherobject o f -the invention is to `545 provide a ringroller of the foregoing character` as a substitute for the second rollerof a standard cotton drawing frame to accomplish the foregoing objects,with the rings of said roller diagonally cutfrom a cylinder whereby asliver moving in -c'ontaotwithcertain onesof saidringsm'aybeedge-abutting freely mounted rings whereby A shifted longitudinally ofthe ring roller by its reciprocating bar with the rings disposedlaterally of the side edges of the sliver presenting an inclined sideface to the adjacent'edge of the sliver I so that such rings havingtheir 'lower sides in planes below the upper surface of the sliver mayeasily rise to permit the movement of the sliver longitudinally of thering cylinder.

With the above and other Objects in View that will become apparent asthe nature of the invention is better understood, the same consists inthe novel form, combination and arrangement of parts hereinafter morefully described, shown Figure 4` is an enlarged fragmentary elevationalview of the substituted ring roller and its associated lower roller witha sliver having an even pressure placed thereon by several of thev ringsof the ring roller. A

Referring more in detail to the accompanying drawing and particularlytoFigure 1 there is illustrated a standard cotton drawing frame designedfor the handling of short fiber staple and comprising a pair of frontrollers I0 and II coll.-` stituting the delivery draft rollers of theframe, a third pair of pressing rollers I2 and I3fand a pair of entryrollers Il and I5, the pressing rollers I2I3 and-the entry rollers I4-I5rotating at the same peripheral speed. The top rollers Ill, I2 and I4are weighted as at I6 for proper ensagement -with a sliver passingbetween the top and bottom rollers of the several pairs mentioned. 1 y,

The top roller of the second rollerpair preceding the front top rollerI0 is removed and a ring roller designated in general by the referencecharacter I1 is substituted therefor, the ring rollerl cooperating withthe standard steel roller I8 ofthe second roller pair. By eliminatingthe top roller of the second roller pair and substituting therefor afreely mounted ring roller, there is provided a slide eld I9 between thelpressing rollers I2-I3 and the front rollers Ill-II for long bers`while the short fibers passing through said 'slide field I 9 karecontrolled -intheir movements and directedtoward the front draft rollersI0-II by theringroller I'|.

'Ihe ring roller l1 is shown more in detail in Figures 2 to 4 removedfrom the cotton drawing frame and includes an axle 20 having anannularly-enlarged portion 2 I intermediate the ends thereof to form endabutment shoulders 22 against which one side of a cylindrical bearing 23freely mounted on the end ofthe axle 2U abuts, the cylindrical bearing23 being retained on each axle and by a collar 24 secured to each axleend and abuttingly engaging the adjacent side of the cylindrical bearing23. The axle ends outwardly of the intermediate enlarged portion 2|thereof are freely rotatable in the cylindricall been found preferableto cut them at an angle'at approximately 15. As shown in Figure 3, the25 rings 26 are of an internal diameter much greater than the diameterof the intermediate portion 2| of the axle 20 so that said rings whenengaged With a sliver passing under groups of said rings may' freelymove relatively to each other with those rings of a group engaged with asliver bearing by their own Weight on the sliver to impart an evenpressure to the entire upper surface area of the sliver. By cutting therings 26 at an angle extending across the axle 20, the side edges of thesliver are presented to` an inclined side edge of -a ring positionedlaterally of the sliver with the result that when a sliver is moved byits reciprocating bar longitudinally of the ring roller a minimum ofresistance is offered to the sliver in such movement, the ring ridingupwardly out of the path of movement of the sliver for subsequentresting thereon.

As shown in Figure 4, the sliver S is of a cross sectional area andwidth to be engaged by three rings 263L which effects a slight elevationof said rings while the laterally disposed rings 26b have droppeddownwardly by their own Weight for riding on the normal steel cylinderI8 of the cotton drawing frame. It will Vbe understoodA that the freemounting of the axle 20 and the free mounting of the rings 26 eliminatesa positive drive from the steel cylinder I8 to said rings 26, the latterbeing rotated independently of each other by their contacts with thesteel cylinder I8 and the sliver S. The rings 26a engaged with thesliver S as 4shown in Figure 4 permit the long fibers to slide throughthe slide field I9 to the front rollers I0 and and at the same timecontrol the movements of the short fibers through said slide eld andVdirect their movements to the front rollers Ill and Il` for the\production of a smooth and even sliver free of internal stretchf ing.The diagonal formation of the rings 26 presents an inclined surface of alowered ring 26 65 to the adjacentside edge of the sliver so that thesliver may freely move longitudinally of the ring roller under influenceof its reciprocating bar. It

is of course understood that the illustration inv Figure 4 isconsiderably enlarged and'that a very small abutting area of a loweredring is presented to a side edgeof a sliver.

It will also be understood that only those rings 'entire upper surfacearea or sliver. fore essential that the cylinder be formed of freelymounted rings so that only certain ones of the groups of rings areevenly engaged with of the group engaged with a sliver exert pressure onsaid sliver by their own weight. .'Should an uninterrupted cylinder beemployed in a slide eld as disclosed herein, one end of the cylinderwould be lowered while the other end of the cylinder was engaged with asliver whichwould resuit in increased pressure of a cylinder on one sideof the "sliver and' uneven pressure over? the the sliver andI by theirown Weight impart an even pressure 'to the sliver.

-While there is herein shown and described the preferred "embbdimentw ofthe invention, it is nevertheless`t be understood that minor changesmaybe made therein without departing from the.

spirit and scope of the invention as claimed.

I claim: N 1. In cotton spinning machinery'for Working 'on fibers ofvarying lengths with the long fibers ofv muchfgreaterI length tharstandard cotton `fibers, said machinery including a cotton draw- It isthere- 2. In cotton spinning machinery for working' on fibers of varyinglengths With the long fibers of much greater length than standard cottonfibers, said machinery including a cotton drawing frame having a ringroller substituted for the top rolle-r of the pair of rollers precedingthe front rollers of the frame to form a slide field for long fibersbetween thepressing rollers and front roller and acting to control and.feed the shorter fibers through said eld to the front rollers, said ringroller being formed of freely mounted edge abutting rings individuallymovable in paths at yacute angles diametrically ofthe ring rollerwithout changing the overall length of the ring roller whereby thoserings under which a vsliver passes impart an even pressure to the entireupper surface area of the sliver.

3. In cotton Ispinning machinery for working on bers of varying lengthswith the long fibers of much greater length than standard cotton`fibers, said machinery-including a cotton `drawing frame having a ringroller substituted for the top roller of the pair of rollers precedingthe front rollers of the frame to form a slide field

